Google: Gemini 3.8 Flash
Gemini 3.8 Flash is a Google model that accepts text, image, video, audio, and file inputs, which makes it suitable for mixed-media workloads without separate preprocessing pipelines. It offers a context window of 1,048,576 tokens and can return up to 65,536 tokens per response, enough to handle long documents or extended transcripts in a single pass. It supports tool calling and a reasoning mode; structured output support is not listed in the available data. At $0.75 per million input tokens and $3.75 per million output tokens, it suits teams that need broad input coverage and long context. Output-heavy tasks will cost noticeably more than input-heavy ones. Its blended benchmark score of 69.0 comes from a single independent benchmark, so its standing against competitors is only partially established. Shortlist it for multimodal or long-context work, but run your own evaluations before committing, since one benchmark offers a thin basis for comparison.
Benchmark results
Independent, published benchmarks. Blended score 69.0 across 1 benchmark, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 67.5 |
- Model ID
- google/gemini-3.8-flash
- Vendor
- Released
- September 2026
- Tokenizer
- Gemini
- Input Modalities
- text, image, video, file, audio
- Output Modalities
- text
- Max Output
- 65,536 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- ✓ accepts audio
- Moderated
- no
What it costs in practice
Computed from the current $0.75/M input and $3.75/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.03 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.56 |
| A month of a busy support chatbot | 5M in / 2M out | $11.25 |
Strong choice for
Category rankings
Where Google: Gemini 3.8 Flash places across the 7 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #4 | TranscriptionVoice · of 25 ranked | 123 |
| #6 | TTS ReplacementVoice · of 25 ranked | 115 |
| #7 | Audio SummarizationVoice · of 25 ranked | 148 |
| #7 | Video Auto-TaggingVideo · of 25 ranked | 123 |
| #9 | Image CaptioningVision · of 25 ranked | 121 |
| #14 | Video SummarizationVideo · of 25 ranked | 148 |
| #21 | Trivia & General KnowledgePersonal · of 25 ranked | 116 |
Similar models
Google: Gemini 3.8 Flash (batch)
Google: Gemini 3.7 Flash
Google: Gemini 3.7 Flash (batch)
Google: Gemini 3.6 Flash
Google: Gemini 3.6 Flash (batch)
Google: Gemini 3.5 Flash Lite
Quick answers
- How much does Google: Gemini 3.8 Flash cost?
- $0.75 per million input tokens and $3.75 per million output tokens.
- What is Google: Gemini 3.8 Flash's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.8 Flash support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.8 Flash process images?
- Yes, it accepts image input.